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CC-2224 Physics Paper 2 Topics And Example Quetsions And Mark Sceme Answers > P10(Force And Motion) > Flashcards

P10(Force And Motion) Flashcards

1
Q

What is Newton’s second law

A

The acceleration of an object is
-proportional to the resultant force on the object
-inversely proportional to the mass of the object

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2
Q

What is inertia

A

The tendency of an object to stay at rest to continue in uniform motion(moving at constant velocity)

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3
Q

The inertial mass of an object is …

A

A measure of the difficulty of changing the objects velocity

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4
Q

What’s the formula for inertial mass

A
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5
Q

What’s the formula for resultant force acting on an object

A
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6
Q

The greater the resultant force on an object…

A

The greater the objects acceleration

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7
Q

The greater the mass of an object …

A

The smaller it’s acceleration for a given force

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8
Q

The smaller it’s acceleration for a given force

A

The resultant force is in the same direction as the velocity

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9
Q

The velocity of an object decreases if …

A

The resultant force is in the opposite direction to its velocity

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10
Q

What is the formula for momentum

A

P= mv

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11
Q

In a closed system…

A

The total momentum before an event is equal to the total momentum after the event

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12
Q

What’s the formula for the conservation of momentum

A

Ma X Va + Mb X Vb=0

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13
Q

What is the conservation of momentum

A

When two objects push each other apart they move with different speeds if they have unequal masses, and with equal and opposite momentum so their total momentum is zero

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14
Q

The longer the impact time …

A

The more the impact force is reduced

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15
Q

When two vehicles collide …

A

-They exert equal and opposite forces on each other
-their total momentum is unchanged

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16
Q

What is the formula for impact force

A

Force= mass X change of velocity/ time taken

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17
Q

The shorter the impact time …

A
18
Q

An object is elastic if …

A

It returns to its original shape when the forces deforming it are removed

19
Q

What is hookes law

A

The extension of a spring is directly proportional to the force applied, as long as it’s limit of proportionality is not exceeded

20
Q

Do in notebook

A
21
Q
A
22
Q
A
23
Q
A
24
Q
A
25
Q

Do it in notebook

A
26
Q

What is terminal velocity

A

When an object moves at a steady speed in a constant direction because the
resultant force acting on it is zero

27
Q

How is terminal velocity reached

A

-At the start the object accelerates downwards due to the force of gravity
-As the object’s speed increases frictional forces such as air resistance or drag increase
-At terminal velocity the weight of the object due to gravity is balanced by the frictional forces and the resultant force is zero

28
Q

What are the forces on a parachutist

A

-when parachutist jumps they accelerate due to gravity
-as they accelerate drag increases therefore drag and gravity balance reaching terminal velocity
-they drop at constant speed
-parachute opens increased surface area causes drag to increase
-they decelerate
-eventually both gravity and drag balances reaching terminal velocity again but at much lower altitude

29
Q

What does SUVAT stand for

A

S=distance
U=initial velocity
V=final velocity
A=acceleration
T=time

30
Q

What is the stopping distance

A

The total distance travelled during the time it takes for a car to stop in response to some emergency

31
Q

What is the formula for stopping distance

A

Stopping distance = Thinking distance + Braking distance

32
Q

What is braking distance

A

the distance travelled under the braking force in metres

33
Q

What is thinking distance

A

the distance travelled in the time it takes the driver to react

34
Q
A
35
Q
A
36
Q

What is the 1 SUVAT equation

A
37
Q

What is the 2nd SUVAT equation

A
38
Q

What is the 3rd SUVAT equation

A
39
Q

What is the 4th SUVAT equation

A
40
Q
A
41
Q
A
42
Q
A

CC-2224 Physics Paper 2 Topics And Example Quetsions And Mark Sceme Answers (10 decks)

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